Note: All images in are loaded into memory, so you are bound by the memory of your machine. So if this app crashes (there is no harm if it does), you loaded to many images from that directory. Images nowadays can be extremely large given the advent of 14 Mega-pixel cameras shoot 14Mb picture. Therefore, 1 Gig of memory will be consumed with roughly 73 pictures. 2 Gigs is approx. 146 pictures. 4 Gigs of memory is about 292 large pictures.